Process of constructing water-tight masonry walls.



No. 734,925. PATENTED MAR. 14, 1905.

o. M. CRAWFORD.

PROCESS 0F CONSTRUCTING WATER. TIGHT MASON'RY WALLSl APPLIOA'TION 'FILED 001.'.1'2. 19o-4.

UNITED STATES Patented March 14, 1905.

PATENT OEEIcE.

CHARLES M. CRAWFORD, OF HARTFORD, CONNECTICUT.

SPECIFICATION forming part of Letters Patent No. 784,925, dated IJarch 14, 1905.

Application filed October 12, 1904. Serial No. 228.166.

1"() all '1i/'700771, it may concern.'

Be it known that LCHARLEs M. CRAwEoRD,a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Processes of Constructing Water -Tight Masonry Valls', of which the following is a specification.

My invention relates to a process-of constructing masonry walls, iioors, dams, and the like, and has for its object the provision of means for forming recesses between the blocks of cement or other artificial masonry forming said walls adapted to receive a plastic material, and thereby provide a water-tight joint at the junction of said blocks.

Further objects and advantages of my invention will be set forth in the detailed description which now follows.

In the accompanying' drawings, Figure l is a horizontal section taken through two blocks of cement, showing acollapsible trough, hereinafter described, in position. Fig. 2 is a view similar to Fig. 1, showing said trough collapsed and ready to be removed. Fig. 3 is a view similar to the two preceding Views,show ing the collapsible trough removed and the recesses filled with a plastic material. Fig. 4 is an elevation of the trough with its sides collapsed. Fig. 5 is a similar view with the sides of the trough extended.

Like numerals designate similar parts in all of the figures of the drawings.

In constructingawall ordam in accordance with this invention the block 5 of cement is first formed loyinserting astick of wood, such as a piece of scantling, in position before the cement is placed in the mold or form. After the cement hardens this piece of wood is removed, leaving a recess 6. such as illustrated.

The collapsible trough 7 comprises walls 8 and 9, hinged together at 10 and capable of being drawn together or forced apart by the links 11 and rod 12, said links being hinged at 13 to the walls of the trough and at 14 to the rod I2 or other connecting member, whereby when said rod is drawn up, as shown in Fig. 4, the walls of the trough will be collapsed to permit the ready withdrawal of said trough, as will be hereinafter described.

After the recess 6 has been formed in the cement block the above-described trough is placed in position with iianges land 16 resting against the face of the said block adjacent tothe edges of recess 6. The cement forniing the second block 17 is then placed in the mold or form, the trough 7 preventing the said cement from filling' the recess 6 when this is done. After the cement hardens the trough 7 is collapsed and withdrawn. rIhe recess which remains is then filled with some suitable plastic material 184 see Fig. 3) of such consistency as to effectually resist the pressure of water when the fissures between the blocks of cement widen as said blocks contract and to give to permit said fissures to close when said blocks expand.

A way has long been sought of constructing cement or concrete walis, floors, dams, and the like with the joints thereof filled with a plastic material, and from the foregoing description it will be seen that simple and eflicient means are herein provided for accomplishing this object. By providing the collapsible trough the cement formingthe second block is prevented from entering the recess formed in the lirst block until said cement hardens, while rcndering it possible to remove said trough after said cement hardens and the recess is ready to receive the plastic filling material.

It is to be understood that I do not limit myself to the use of the specific collapsible trough herein shown and described, for any form of collapsible trough or its equivalent may be substituted therefor-,if desired. Neither do I limit myself to any specific material for forming the blocks comprising the masonry structure, for any form of concrete or artificial stone may be used.

Having described my invention, whatl claim is 1. A process of constructing water-tight joints in masonry which consists of intel-posing a collapsible trough or its equivalent between a recessed block forming part of said masonry and the cement which forms the adjacent block until said cement harde'ns, and in then removingl said. collapsible trough and lillinzg` the recesses in the blocks with a plastic material.

2. A process of constructing water-tight joints in masonry which consists of forming a recessed block of cement, concrete or some analogous material and so placing a collapsible trough or its equivalent that the cement forming the adjacent block will be prevented from filling` said recess. until the cement hardens, and in then removing' said collapsible trough and iillingthe remaining` recesses with a plastic material.

3. A process of constructing water-tight joints in masonry which consists of interposing a mold between a recessed monolith and the cement which forms the adjacent monolith,

CHARLES M. CRAWFORD.

Vitnesses:

JosIAH H. Pneu, NORMAN MoD. CRAWFORD. 

